Gas producer



A April 14, 1925 J. H. LEMMON (ms PRODUCER 1919 2 Sheets-Sheet 1 Filed June 5 anmmtoz:

J. H. LEMMON April 14, 1925.

GAS PRODUCER Filed June 5, 1919 2 Sheets-Sheet 2 Patented Apr 14, 1925.

UNITED STATES.

PATENT orrice.

JAMES HARRY LEMMON, OF MILLTOWN, INDIANA, ASSIGNOR TO LOUISVILLE CEMENT COMPANY, OF LOUISVILLE, KENTUCKY, A CQRBOR-ATION OF Kiflllqfilll'CKYv GAS PRODUCER.

Application filed June 3, 1919. Serial; No. 301,549.

To all whom it may concern:

Be it known that I, JAMES HARRY LEM- MON, citizen of the United States, residing at Milltown, in the county of Crawford and State of Indiana, have invented certain new and useful Improvements in Gas Producers, of which the following is a specification, reference being had therein to the accompanying drawing.

The invention relates to improvements in gas producers.

I-Ieretofore so far as I am aware, gas producers have been used in which the coal on the grate from which the gas is produced is positioned over an air pit having openings or cavities therein for the introduction of atmospheric air currents passing through the bed of coal to promote the flow and distribution of gases from the producer to the kiln. These prior art structures have been found to contain defects preventing the highly successful operation of the producer, in that the air currents passing through the bed of coal are atmospheric currents subject to many variations due to wind velocity, direction, or. the like, these fluctuations obviously causing an uneven and unsteady flow of gas to the kilns from the producer.

It isan object of the present invention to provide a producer that overcomes the difficulties encountered with the use of the prior art structures, and more particularly resides in a construction wherein the ash pit underlying the air grate is impervious to atmospheric air currents when the pro ducer is in operation, the necessary air being supplied through a suitable air conveyor leading froma suitable sourceof air supply. This insures a constant uniform flow of air through the coal on the grate, and correspondingly gives a steady flow of gas to the in'oduccr, not affected by climatic con- (1 it ions.

The invention further embraces the pro vision of a means for cooling the produoer, residing in a suitable water jacket arranged therearound with which the water inlet and return pipes leading to and from a storage tank communicator The invention also includes many novel features of construction and combination of parts, and many changes may be freely made without departing from the spirit thereof.

In the drawings,-

Figure 1 isa view in elevation showing parts in vertical section.

Fig. 2 is a transverse vertical section on the line aa of Fig. 1 looking in the direction of the arrows with parts shown in elevation. V

Referring now more particularly to the drawings, wherein like reference characters indicate corresponding parts, the numeral 1 designates a producer, the structure of which may he of many various forms, but for the purpose of illustration, comprises the usual tile or fire brick lining 2 seated upon a concrete base 3. The base 3 is of relatively thick concrete having a bottom portion and is adapted to be impervious to all atmospheric air currents. The base 3 is formed with a pit 4 therein, the inner walls of the base being lined with a metal lining 5 to render the same entirely impervious to air. The base is provided with ash doors 6 along one side thereof which tightly fit the metal lining so as to prevent the passage of air into the ash pit. It will be understood that any suitable form of ash door may be used, and that the side of the' concrete base 3 in which the doors are placed is provided with openings passing en'tlrely .therethrough to permit the opening and closing of the doors and the removal of the ashes from the pit. The concrete base and lining are also provided with pockets for the reception of a shaker rod 7'which will 7 be later described.

Surrounding and extending over the top of the tile fire wall 2 of the producer is a water jacket 2', the jacket being seated upon the upwardlyextending walls of the base 3 and of a substantial oval. formation extcndingentlrely around the base 3 and above the same on all sides.

This jacket consists of suitable metal plates retained in proper separated position by stay bolts passing therethrough at various intervals, and is also formed in its sides at its lower ends with openings corresponding with the openings 3 in the tile or fire brick for the reception of. cast iron doors 8 that may be opened to remove. clinkers from the rocking grate 9 positioned upon the top of the ash pit, and upon which the coal is deposited. This grate is, as stated, a rocking one, and any of the conventionaltypes now employed'in furnaces may be used without departing from the invention. The bars of the grate are operated by the shaker bar 7 to which I have heretofore alluded, through the medium of the arm 10.

The Water jacket is formed along its upbeing shown 9r the purpose of illustration,

leading from the producer to any consumer, pneferably a kiln which forms no part of this invention and of course is not shown. These v arions openings in the jacket may be disposed Whenever desired, and the invention is not in any way limited to the showing herein described.

A highly successful structure and arrangement of circulating pipes for delivering water 10111?! storage tank to the water jacket surrounding the producer and by returning the same to said tank for cooling when it becomes intensely heated is herein disclosed consisting of a water feed pipe 14 leading from the lower portion of the reserveir 15 to the water jacket of the producer. l ltate'r flows through this pipeand in the disclosure herein shown the pipe near its lei ej end mmu cat wit t fe ing Pipe c rry ng the Wat r w o th lower corners, either on oneor both sides of the producer, and supplying cold water t h l wer Par of he ja k t h re the fi e i t hot estible al 5 m y be used for controlling the admission of the fluid to the jacket, and it will here be understood that the Water, feeding pipe 14: is disposedentirely exteriorly of the producer and it isno't entirely necessary that this pipe be branched to provide two delivery pipes as herein disclosed, but a single delivery pipe leading to the lower portion of the jacket could be conveniently used. It will be obvious that the water in the jacket is subjected to intense heat, andthis Water rapidly heats, rising to the upper portion of the jacket from where it is'conveycd through the return pipe 16 entering the top of the jacket at the point 17 andloading upwardly and discharging into the upper portion of the tank through the discharge opening 18, .pern'litting the intensely heated water to remain in the tank a suflicient time to become somewhat cool, from where it is again delivered to. the jacket for keeping down the intense heat of the producer.

One of e essentia feat e f his nr tion resides in the fact that the ash pit is practically air tight, and not subject to atmospheric air currents. In producers of this kind, it is necessary that air currents be passed through the body of coal lying upon the air grate to properly distribute the flow of gas from the producer to the kilns in as steady and uniform manner as possible. lVhere atmospheric currents are used which is the general custom in this art, a change in the direction of the wind, the velocity thereof or .other climatic conditions, cause the ,air currents that pass through the bed of 6. 11. i O fluctuate and therefore likewise cause a fluctuation of a flow of gas through the fines to the kiln or other consuming device, It is ;tl 1erefore essential to the success ful operationpof the prodncers of this char acter' to provide a constant and steady flow of air through thegrate and .coal thereon, and to this end my invention contemplates the provision of an air pipe 19, leading from a pump 20, located at any suitable point and extendinginto the ash pit beneath the grate as indicated by the character 21. It will be seen that this provides an air supply and the air currents passing through the coal bed are substantially uniform giving a steady supply of gas to the fines to enable the successful operation of the kihi or kilns communicating-with the fines, changes in atmospheric conditions having no effect Whatever upon the operation of the producer.

Having thus, described the invention, the operation may be briefly stated as follows:

The covers are removedfrom the charging openings 11 and avsuitable supply of coal placed upon the grate. The pump is then placed in operation and air introduced through the pipe 21 into. the ash pit, which passes through'the burning coal on the grate andcauses the issuance of a steady flow of gases to the fines leading from the producer. The circulating system'is of course in operation, water being conveyed to the water jacket during this time by the pipes 14, and

1 1, being taken therefrom after it has served as a cooling agent by the return pipe 16, back to the reservoir or container 15 at which point it is cooled and then again carried lOl'llO- water jacket.

The coal'fed to the producer is allowed to coke, and after burning the rocking grate is manipulated through the shakerT and arm 10 causing the depositing of the ashes into the ash pit from which they are removed through the openings closed by the ash doors 6, Any clinkcrs which may remain upon the grate are removed from the producer by the opening of the cast iron doors 8, and after the ashes and clinkers have thus been removed, the producer is then again in condition to receive a new supply of coal.

lVhile I have shown and described the preferred embodiment of my invention, it Will of course be understood that many changes may be made both in regard to the detail construction of the various parts as well as the arrangement thereof, without departing from the spirit of the appended claims.

' What I claim is: V

1. A gas producer comprising a base having an upwardly extending wall, a fire wall extending upwardly from the wall of the base and spaced from the outer edge thereto to form a seat, a grate mounted in the base within the upwardly extending wall thereof, awater jacket surrounding the fire wall with its lower end resting upon the seat of the base wall, said water jacket extending above the upper end of the fire wall and over the top thereof, and means for circu lating water through the Water jacket.

2. A gas producer comprising a base,a

fire wall extending upwardly from the base and spaced from the outer edge thereof to form a seat, a grate mounted in the base, a water jacket surrounding the fire wall with its lower end resting upon the seat, said water acket entending above the upper end of the fire wall and over the top thereof, a

water tank above the water jacket, means for feeding water from the lower end of the tank to the bottom of the water jacket, and means for feeding the water from the top of the water jacket to the upper end of the tank.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses. JAMES HARRY LEMMON. \Vitnesses: e

HENRY S. GRAY, GRACE M. WALKER, 

